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Miller Range 07400
Basic information Name: Miller Range 07400
     This is an OFFICIAL meteorite name.
Abbreviation: MIL 07400
Observed fall: No
Year found: 2007
Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)]
Mass:help 2.1 g
Classification
  history:
Antarctic Meteorite Newsletter:  AMN 34(1)  (2011)  CO3
Meteoritical Bulletin:  MB 101  (2012)  CO3
Recommended:  CO3    [explanation]

This is 1 of 527 approved meteorites classified as CO3.   [show all]
Search for other: Carbonaceous chondrites, Carbonaceous chondrites (type 3), CM-CO clan chondrites, and CO chondrites
Comments: Field number: 18602
Approved 14 Feb 2011
Writeuphelp
Writeup from AMN 34(1):
Sample Number MIL 07400
Newsletter 34,1
Location Miller Range
Field Number 18602
Dimensions 2.0 x 1.0 x 0.75
Weight 2.14
Original Classification CO3 Chondrite
Pairing MIL 07315; MIL 07322; MIL 07342; MIL 07358; MIL 07361; MIL 07383; MIL 07400; MIL 07401; MIL 07408; MIL 07417; MIL 07418; MIL 07425; MIL 07439; MIL 07444; MIL 07445; MIL 07459; MIL 07473; MIL 07485; MIL 07616; MIL 07621; MIL 07626; MIL 07628; MIL 07629; MIL 07631; MIL090216; MIL090219; MIL090301; MIL090308; MIL090327; MIL090343;
Mineral Composition (%Fa &  %Fs)
Fayalite (mol%): 0-48 ; Ferrosilite (mol%): 3
Weathering
B
Fracturing
A
Macroscopic Description - Roger Harrington, Kathleen McBride and Cecilia Satterwhite
These carbonaceous chondrites have varying amounts (20-100%) of brown/black fusion crust with oxidation haloes and rusty areas. Some exterior surfaces are pitted. The interiors of these meteorites range in color from brown to dark gray to black. Most have a fine-grained matrix with light colored inclusions.
Thin Section (,2) Description - Cari Corrigan and Linda Welzenbach
These sections are so similar that a single description suffices. The sections consist of abundant (up to 1 mm) chondrules, chondrule fragments and mineral grains in a dark matrix. Metal and sulfide occur within and rimming the chondrules. Glass within chondrules appears to be very clear/fresh. CAIs are abundant in many sections (mostly Type A), and range in size up to 1 mm, many containing blue hibonite grains. At least one compound CAI was found. AOAs up to 1 mm exist, as well. Olivine ranges in composition from Fa0-80. Pyroxene analyses range from Fs0-44 (most from Fs0-13). These meteorites are somewhat terrestrially altered. They are CO3 chondrites (likely type 3.0-3.2) and are probably members of the MIL 07099 pairing group.
Antarctic Meteorite Images for Sample MIL 07400
Thin Section Photo of Sample MIL 07400 at 2.5X Magnification in Plane-Polarized Light  Group Photo of Sample MIL 07400 Showing North View  Thin Section Photo of Sample MIL 07400 at 2.5X Magnification in Reflected Light  Thin Section Photo of Sample MIL 07400 at 2.5X Magnification in Cross-Polarized Light 
Lab Photo of Sample MIL 07400 Displaying North View 
Data from:
  MB99
  Table 0
  Line 0:
Date:2007
Mass (g):2.1
Pieces:1
Class:CO3
Weathering grade:B
Fayalite (mol%):0-48
Ferrosilite (mol%):3
Classifier:SI
Type spec mass (g):2.1
Type spec location:JSC
Main mass:JSC
Finder:ANSMET
Comments:Submitted by AMN
Institutions
   and collections
JSC: Mailcode KT, 2101 NASA Parkway, NASA Johnson Space Center, Houston, TX 77058, United States; Website (institutional address; updated 3 Sep 2013)
SI: Department of Mineral Sciences, NHB-119, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, United States; Website (institutional address; updated 16 Jan 2012)
Catalogs:
Search for this meteorite in the NASA/JSC database (U.S.):   
References: Published in Antarctic Meteorite Newsletter 34(1) (2011), JSC, Houston
Published in Meteoritical Bulletin, No. 99, April 2012, MAPS 47, E1-E52 (2012) [published online only]
Published in Meteoritical Bulletin, no. 101, MAPS 50, 1661, September 2015
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Geography:

Antarctica
Coordinates:
     Recommended::   (83° 23' 34"S, 156° 4' 19"E)

Statistics:
     This is 1 of 39175 approved meteorites from Antarctica (plus 5051 unapproved names)
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